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Visiting PMO in June (2018)

The portable toilets have arrived at PMO (and the road has been graded) as of June 15!

PMO is now open for Friday and Saturday night tours, and June can be a good opportunity to visit. Keep in mind, however, that sunsets are late (8:45 p.m. or so), and you should plan on staying until at least 11:00 p.m. (weather permitting) to have a good experience including a couple of dark sky objects such as star clusters. Tours will normally not end until midnight this time of year, if the sky remains clear.

Do arrive early (by about sunset) and check in at the greeting center next to the parking lot, or proceed up to the telescopes if the greeting center is closed.

Twilight viewing beginning about 9:00 p.m. will focus on the planets Venus, visible low in the west, and Jupiter, well-placed in the southeast sky. Saturn will not be visible at a convenient hour in early June, but will be visible near the end of tours by late June. Mars will be visible beginning in July.

Moon viewing information:

June 1-2 – moon still bright (after full phase) and rises after 11 p.m., cutting short a brief period of dark sky viewing at the end of twilight; June 8-9 – waning crescent moon rises very late and won’t interfere with dark sky (also known as “deep sky”) viewing; June 15-16 – thin waxing crescent moon visible near Venus after sunset and won’t interfere with dark sky viewing; June 22-23 – moon approaching full and doesn’t set until very late, so avoid this weekend for dark sky viewing, although it would be a good opportunity to see the moon itself; June 29-30 – moon still nearly full and up by about 11 p.m., so also avoid this weekend and wait for the upcoming July 6-7 holiday weekend.

We’re looking forward to seeing you at PMO!

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